TFT: Use lvgl instead of guilite

.gitmodules

@@ -10,3 +10,6 @@
 [submodule "src/lib/tusb_xinput"]
 	path = src/lib/tusb_xinput
 	url = https://github.com/Ryzee119/tusb_xinput.git
+[submodule "src/lib/lvgl"]
+	path = src/lib/lvgl
+	url = https://github.com/lvgl/lvgl.git

platformio.ini

@@ -36,6 +36,17 @@ src_filter =
     +<lib/tinyusb/src/class/hid/*.c>
     +<lib/tusb_xinput/*.c>
 
+    +<lib/lvgl/src/core/*.c>
+    +<lib/lvgl/src/draw/*.c>
+    +<lib/lvgl/src/draw/sw/*.c>
+    +<lib/lvgl/src/font/*.c>
+    +<lib/lvgl/src/hal/*.c>
+    +<lib/lvgl/src/extra/lv_extra.c>
+    +<lib/lvgl/src/extra/layouts/flex/*.c>
+    +<lib/lvgl/src/extra/themes/default/*.c>
+    +<lib/lvgl/src/misc/*.c>
+    +<lib/lvgl/src/widgets/*.c>
+
 build_flags =
     -O2
     -Wall
@@ -68,8 +79,12 @@ build_flags =
     ; Tinyalloc Configuration
     -DTA_DISABLE_COMPACT
 
+    ; LVGL Configuration
+    -Isrc/lib/lvgl
+    -DLV_LVGL_H_INCLUDE_SIMPLE
+
 [env:teensy41]
-platform = teensy@~4.13.1
+platform = teensy@~4.16.0
 board = teensy41
 framework = arduino